油气藏评价与开发 ›› 2021, Vol. 11 ›› Issue (6): 864-870.doi: 10.13809/j.cnki.cn32-1825/te.2021.06.010
收稿日期:
2020-04-07
出版日期:
2021-12-26
发布日期:
2021-12-31
作者简介:
吴公益(1982—),男,硕士,工程师,从事油气田开发工作。地址:江苏省泰州市海陵区南通路99号泰州采油厂,邮政编码:225300。E-mail: 基金资助:
Received:
2020-04-07
Online:
2021-12-26
Published:
2021-12-31
摘要:
CO2驱技术在国外应用广泛,而国内应用规模相对较小,重要因素是其技术和经济指标备受考验。以近年苏北小断块油藏CO2驱项目为例,分析了CO2吞吐、低渗油藏同步气驱、气顶驱、气水交替、中高渗油藏CO2复合驱等开发模式,及其经济效益与影响因素。苏北实践表明CO2驱项目经济效益与注入成本和换油率密切相关,各开发模式经济效益有一定差异但总体较好,特别是低渗低含水油藏通过气顶驱及气水交替驱效果较佳。
中图分类号:
吴公益,赵梓平,吴波. 苏北不同类型油藏CO2驱开发模式及经济效益评价[J]. 油气藏评价与开发, 2021, 11(6): 864-870.
WU Gongyi,ZHAO Ziping,WU Bo. CO2 flooding development models and economic benefit evaluation of different types of reservoirs in Subei basin[J]. Petroleum Reservoir Evaluation and Development, 2021, 11(6): 864-870.
表1
XB稠油吞吐生产效果"
井号 | 注入轮次 | CO2注入量(t) | 日产油量(t) | 含水率(%) | 累计增油量(t) | |||
---|---|---|---|---|---|---|---|---|
吞吐前 | 吞吐后 | 吞吐前 | 吞吐后 | |||||
XB1P1 | 1 | 1 000 | 0.45 | 9.00 | 94 | 6 | 723 | |
2 | 1 000 | 0.45 | 6.39 | 94 | 12 | 345 | ||
3 | 200 | 0.78 | 3.06 | 91 | 15 | 103 | ||
4 | 1 020 | 0.08 | 1.05 | 99 | 85 | 158 | ||
XB3P2 | 1 | 617 | 0 | 4.90 | 94 | 10 | 526 | |
2 | 310 | 0.11 | 3.80 | 99 | 16 | 191 | ||
XB3P3 | 1 | 1 000 | 0.57 | 7.00 | 91 | 10 | 561 | |
2 | 1 000 | 0.60 | 3.78 | 91 | 11 | 764 | ||
XB3P6 | 1 | 2 007 | 0.60 | 14.00 | 96 | 11 | 626 | |
2 | 1 049 | 0.60 | 4.36 | 96 | 13 | 209 | ||
3 | 324 | 0.23 | 0.60 | 98 | 95 | 90 |
表2
不同类型油藏CO2驱开发效果及经济指标"
油田 | 油藏 类型 | 含水 阶段 | 开发 技术 | 注入量 (104 t) | 增油 (104 t) | 注入成本 (元/t) | 销售均价 (美元/桶) | 吨油运行成本 (元) | 静态现金流入 (万元) | 矿场 换油率 (t/t) | 边际效益 极限换油率 (t/t) | 矿场实际边际效益极限油价 (美元/桶) |
---|---|---|---|---|---|---|---|---|---|---|---|---|
ZJD | 低渗 | 低含水 | 混相驱 | 9.08 | 3.22 | 321 | 60.0 | 475 | 2 476 | 0.36 | 0.18 | 35 |
TN | 低渗 | 高含水 | 气水交替驱 | 9.80 | 2.31 | 251 | 56.5 | 728 | 1 765 | 0.24 | 0.15 | 52 |
ZC | 中高渗 | 高含水 | CO2复合驱 | 1.37 | 0.86 | 851 | 64.0 | 414 | 1 064 | 0.62 | 0.36 | 37 |
JN | 致密 | 低含水 | 异步吞吐 | 0.65 | 0.82 | 503 | 54.0 | 663 | 1 143 | 1.25 | 0.24 | 23 |
XB | 稠油 | 高含水 | 复合吞吐 | 0.95 | 0.45 | 309 | 50.0 | 635 | 452 | 0.47 | 0.15 | 28 |
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